Trolley-wheel mount.



B.. C. SHOWALTBR.

' TROLLEY WHEEL MOUNT.' Arrmommn Hmm :mm: 2s. ,1913.

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nieuw-wikir-w 'l tutti I FRED K. THEME ANB ,Qll'E-.FDRTH TO JOHN l?.REILLY, BOTH 0l? ALTONA,

PENNSYLVAN.

Specification of Letters. Patent.

Application le .Tune 28, 1913.

To all w71 omI it may concern Be it known that I, ROY C. Srioumrxrnn, acitizen ot' the United States, residing at Al toona, in the countyT ofBlaI r and .State of Pennsylvania, have invented new and usefulImprovements in Trolley-Vllheel lvilounts, of which the. following is aspecification.

My invention relater',` particularly to trolley harps which has tor itsohjeet the greater elieiency and Wearingr qualities for this; rlerice.

lt is well known that tho ordinary trolley pole having a trolley Wheelrigidly fastened thereto jumps olli' the Wire very often and in iii/anyplaces binds severely on the Wire for the reason` that it is notdirectly orer the center e the traeli. The binding causes considerableWear on the trolley Wheel7 both in the groove which is intended toreceive lthe Wire, and in the hearing. rlhe result is thatthese Whe -lsWear out very rapidly and also that the trolley jumps oh? the Wirelirequently. M'yinventioii obviates these cliflieu vties and increasesthe life. ot' the trolley wheel to more than double what it is with the`ordinary trolley harp. y,

.fr further ohjeet of my invention is to so protectthe parts from rain,sleet, ete., that it will he e`eetive in any kino ot Weather.

With this and other objects in View my inrention consists of thecombination and air-- rangement of parts shown in the accompany ino*drawings, in Whieh- Figure l. is a side View of a trolley harpin theposition il; ordinarily stanfls vwhen in service. Fig. 2 is a, crosssection on line Q-? Fie'. l. Fig: is a erose section on line 8*?, Fig.2, loo-king in the direction of the arrows` To the emlbof the ordinarytroll ,y pole T is fastened the trolley harp l l. This may he (lone inany manner hut l preferably employ rivets or bolts 16, which pass'through the pole anil the harp. lt the nii-- per end of this harp is aforl 2 2 in which is mountecl atrolley Wheel 4 reyolving upon an axle 3.This axle is preferably stationary. ln orrler to take up the Wear andalso to eliminate the noise, a Washer 22 and spring Q3 )l may he enrployecl. The Washer 22 l hears against the A face of the huh of thetrolley Wheel ancl ie held in place hy means ot' lugrs 'which passthrough corresponding openings in the L .L riteniel Agir.. T., MEM.seria; no,

spring 23. rllhe spring; 23 hears toWarfl the Wheel, thereby llolding itsoliol and reclueing the wear. This trolley harp is pret'- erahly hollowwith a platform :is shown at lll Fig. This may he solid or merely a harand is intended to support the one end of the spiral spring while theother end rests against a Washer or nut on the end of a rml f S. Thisrofl 5E- passes through the shelf ll l and. is held in the other portiono'l' the trolley harp hy nie-.1n s of a serev thread. lt may heprevented from turning1 hy passing; a pin through the lower partl ot thetrolley harp and the enel S ot' the rot l S.

The two parte of the harp are separated by earn surfaces such as shownat. 7', Figs. l. and 2. @ver the upper part of the trolley harp l is asleeve which extencls clown over the joint in the two parte ol the harpWhere the Cain surlaces are located. lt is rigidly fastened to the upperpart of the trolley harp so that it cannot- Inore out of plaire. Themeans of fastening, as shown in the drawings, consist of set screws Q2."but it may he rigidly fas tened in any other manne;- sueh assolclerinf"r or lorazng, etc. lt has one or more grooue Slots with 'pinsextending; through it or them and .soeur-eel in the lower part of thetrolley harp. This is to permit4 the upward nieveL ine-nt of the onepart with respect to the other hy reason of the earn surface-sand in"suring; its retin-n tonorinal position, because the stop preventsino-vement to clegree greater than imenrhfrl. The sleeve is slightlylarger than the lower portion of the trolley harp anal, therefore.slides freely upon it. The spring; lilly is held in place hy i: Washeranal a nut 10. 'The upper tare ol the nut has two or more grooros lil inil. and a Cotter pin is passer! through the holt 8 so that it Will restin the grooves t l'fl i oi" the. nut lll :incl thereby prevent rotation.

lily referentie te lli ity will he eeen that, tie tension ot' the L l2can readily he errang-gell hy 'ling the nutl0 up or (loirii on the rollt tl. lt is helfl in lposition hy .the hotter pin lill, which lodges ina groawe i3 on the upper part of the nut. lf the spring should hangen tobreak it is Vrezulily reinoverl hy pulling' out the Cotter pin 'throughthe lorl o'l the trolley harp and taking oilu the nut 10. By this 'meansa which lit into each other,

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new spring can be substituted on thel road by the-conductor or motormanwithout special. tools and with veryjlittle loss of time.

From this description it will be obvious that when a lateral strainisput upon the wheel by 'reason of the wire being; twisted with respectto the our the cum surfaces rifle upward upon each other under thestress et' the spring which tends to return them to normal position../xs soon es the strain is token oil'l the wheel they do return tonorm-il position. The upfvflriuovenient of the com surfaces is limitedby the pin 1T striking the end ot the slot 7. The sleeve 18 7 is a greetprotection against snow und sleet in winter time, sind always insures'freedom o1" mm'oment between the two 'parts when kept in proper oil.

I, therefore, claim-m i.

l. In, a trolley hurp the combination of two parts having com surfaces,an adjustnble spring' for holding' the two parts to-4 gether, :istopping device for limiting the movement of the one relative to theother and menus for protecting the 'joint between the two parts.

2. In u trolley harp the combination of o stationery part attached tothe pole, o movable port, e cam surface between two parte,

ineens for automatically 'retaining them in spring and. means 'forprotecting the 'the two portione y fl. ln a trolley harp the combinationof o stationary port, a movebleport, a bolt .tes-

tened tothe stationary port and passing.

'through the n'fovable part, e spring between ythe mit of seid bolt andthe movable part and means for'holding the spring in en xlr ad wsteclposition, com surfaces between the movable and' stationery parts, and.Ineens for positively limiting; the rotetion'of the movl able part. i

' Reir o, sHoWLTrEe,

Witnesses:

L ULU C UN N nx GUAM, LUCY HILEMAN.

means for adjusting the pressure lot' said joint of

